Why does the HTTP authentication with Elasticsearch fail in Rust?

Elastic Stack Elasticsearch
1

When I use let client = Elasticsearch::default() , it works fine. But when I try to add credentials for the client:

#[macro_use]
extern crate serde_json;
use elasticsearch::{
    auth::Credentials,
    http::transport::{SingleNodeConnectionPool, Transport, TransportBuilder},
    params::Refresh,
    Elasticsearch, Error, IndexParts, SearchParts,
};
use futures::executor::block_on;
use serde_json::Value;
use url::Url;

#[tokio::main]
async fn main() -> Result<(), Error> {
    let credentials = Credentials::Basic("<username>".into(), "<password>".into());
    let u = Url::parse("http://localhost:9200")?;
    let conn_pool = SingleNodeConnectionPool::new(u);
    let transport = TransportBuilder::new(conn_pool).auth(credentials).build()?;
    let client = Elasticsearch::new(transport);
    let response = client
        .search(SearchParts::Index(&["tweets"]))
        .from(0)
        .size(10)
        .body(json!({
            "query": {
                "match": {
                    "message": "Elasticsearch rust"
                }
            }
        }))
        .send()
        .await?;

    let response_body = response.read_body::<Value>().await?;

    println!("{:?}", response_body);

    Ok(())
}

I get the following error:

response Object(
    {
        "error": String(
            "Not Found",
        ),
        "message": String(
            "Not Found",
        ),
        "statusCode": Number(
            404,
        ),
    },
)
2

The response isn't one that I would expect from Elasticsearch. For example, If I run your code against Elasticsearch 7.5.2 instance that doesn't contain a tweets index, the response is

Object({"error": Object({"index": String("tweets"), "index_uuid": String("_na_"), "reason": String("no such index [tweets]"), "resource.id": String("tweets"), "resource.type": String("index_or_alias"), "root_cause": Array([Object({"
index": String("tweets"), "index_uuid": String("_na_"), "reason": String("no such index [tweets]"), "resource.id": String("tweets"), "resource.type": String("index_or_alias"), "type": String("index_not_found_exception")})]), "type":
 String("index_not_found_exception")}), "status": Number(404)})

Note that error is a serde::Value::Object and there's no statusCode or message properties.

My toolchain is

$ rustup show

Default host: x86_64-pc-windows-msvc
rustup home:  <home>

installed toolchains
--------------------

stable-x86_64-pc-windows-gnu
stable-x86_64-pc-windows-msvc
nightly-x86_64-pc-windows-gnu
nightly-x86_64-pc-windows-msvc (default)

active toolchain
----------------

nightly-x86_64-pc-windows-msvc (default)
rustc 1.44.0-nightly (f509b26a7 2020-03-18)

Some questions:

  1. When you say it works with Elasticsearch::default(), what's the response?
  2. What version of Elasticsearch are you running against, and is auth configured?
  3. Do you have a tweets index set up?
  4. If you configure a proxy on the transport and capture the request/response, can you share what you get?
  5. Please can you show your toolchain (rustup show) and Cargo.toml config for the client.
3

Based on the similarity of the response to Invalid NEST response built from a successful (404) low level call, it looks like you may have seeded the client with the Kibana endpoint; the client requires the Elasticsearch endpoint :+1:

4

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